Results 71 to 80 of about 1,999 (210)

GIS partial discharge pattern recognition via a novel capsule deep graph convolutional network

IET Generation, Transmission & Distribution, 2022
Deep learning (DL) has attracted significant attention in partial discharge (PD) pattern recognition of gas‐insulated switchgear (GIS). However, the existing DL method extracts numerical information and ignores spatial correlation information.
Yanxin Wang, Jing Yan, Xinyu Ye, Zhenkang Qi, Jianhua Wang, Yingsan Geng   +5 more
doaj   +1 more source

PROPOSAL OF NEW K-FACTOR FUNCTION IN LIGHTNING IMPULSE TEST FOR ELECTRIC POWER EQUIPMENT [PDF]

, 2017
Ultra high voltage (UHV) systems are increasingly being planned and constructed, hence studies are promoted on the standard for high-voltage test techniques for UHV-class equipment.
Hikita M., Okabe S., Tsuboi T., Ueta G.   +3 more
core   +1 more source

A review of advanced acoustic‐chemical‐optical partial discharge monitoring techniques for ultra‐high‐voltage gas‐insulated equipment

High Voltage, Volume 10, Issue 4, Page 787-806, August 2025.
Abstract Partial discharge (PD) detection is considered one of the most crucial and effective methods for identifying defects in electrical equipment. Consequently, investigating advanced and efficient PD monitoring techniques is essential for the development of gas‐insulated equipment (GIE) and the construction of ultra‐high‐voltage (UHV) networks ...
Xianhao Fan, Weiqi Qin, Rui Qiu, Yiming Zang, Wu Lu, Yin Zhang, Ruiying Chen, Fangwei Liang, Guangyu Sun, Hanhua Luo, Tiejun Ma, Chuanyang Li, Jun Hu, Weidong Liu, Giovanni Mazzanti, Jinliang He   +15 more
wiley   +1 more source

Discrimination of Insulation Defects in a Gas Insulated Switchgear (GIS) by use of a Neural Network Based on a Chaos Analysis of Partial Discharge (CAPD) [PDF]

Journal of Electrical Engineering and Technology, 2007
In this work, experimental investigation is carried out in order to design and fabricate the UHF sensor that is able to detect the partial discharges produced from 10 artificial defects introduced into the real scale 70kV GIS mock-up under high voltage within a well shielded room. As well, in order to verify the on-site applicability of our method, the
Seoung-Yong Jung, Cheol-Hwi Ryu, Yun-Sok Lim, Ja-Ho Lee, Ja-Yoon Koo   +4 more
openaire   +1 more source

Influence of fluorination time on surface flashover of epoxy in insulating gas [PDF]

, 2015
The accumulation of charges on polymeric insulation under high voltage DC stress is a major concern in the transmission system as its formation distorts the local electric field and has an adverse impact on the electrical performance.
Chen, G., Du, B.X., Mohamad, A.
core   +1 more source

Gas‐insulated switchgear partial discharge classification method based on deep transfer learning using experimental and field data

High Voltage, Volume 10, Issue 4, Page 845-855, August 2025.
Abstract Gas‐insulated switchgear (GIS) plays a critical role in ensuring the reliability of power systems, but partial discharge (PD) is a primary cause of failures within GIS equipment. Traditional PD diagnostic methods rely heavily on laboratory data, which differ significantly from that under the complex conditions of field data, leading to a ...
Xutao Han, Haotian Wang, Jie Cui, Yang Zhou, Tianyi Shi, Xuanrui Zhang, Junhao Li   +6 more
wiley   +1 more source

Full Life Cycle Carbon Emission Accounting of the Power System: A Case Study of a Typical 500 kV Substation

Carbon Neutralization, Volume 4, Issue 4, July 2025.
A carbon emission accounting model for the full life cycle of a typical substation is constructed, providing a theoretical basis to formulate scientific and reasonable emission reduction targets and policies. ABSTRACT Against the backdrop of global efforts in energy conservation and emission reduction, substations, as a crucial platform for the ...
Xiaoqin Zhang, Hongbin Zhu, Dabing Chen, Yanli Miao, Peng Xiao   +4 more
wiley   +1 more source

Study on surface flashover characteristics of basin-type insulators under low-frequency transmission based on multiphysics coupling

Zhejiang dianli
To study the surface flashover characteristics of single-phase basin-type insulators in gas insulated metal-enclosed switchgear （GIS） under low-frequency transmission， an electro-thermal-fluid coupling simulation is employed.
LI Guoqiang, BIAN Rong, CHEN Keji, ZHANG Linlin, GU Miaosong, CHENG Zhi, WANG Chao   +6 more
doaj   +1 more source

The electromagnetic effect study of GIS enclosure under high-frequency electromagnetic pulse

The Journal of Engineering, 2019
In gas insulated switchgear (GIS) substation, due to the operation of disconnect switch and circuit breaker, as well as short-circuit fault, SF6 will break down very rapidly.
Shu Chen, Jie Guo, Chengbo Hu, Fengbo Tao, Tianxi Xie, Yang Xu, Jun Jia   +6 more
doaj   +1 more source

The SF6 Decomposition Mechanism: Background and Significance [PDF]

, 2017
Gas Insulated Switchgear (GIS) has been widely used in substations. The insulating medium used in GIS is sulfur hexafluoride (SF6) gas. However, the internal insulation defect existed in GIS would inevitably lead to partial discharge (PD), and cause the ...
Tang, Ju, Xiao, Song, Zeng, Fuping, Zhang, Xiaoxing   +3 more
core   +1 more source